feat: add Doctrine support

docs/pages/docs/features/database/doctrine/index.md

docs/pages/docs/features/database/index.md

docs/pages/docs/features/database/migrations/index.md

docs/pages/docs/features/database/swoole/connection-pools.md

.../pages/docs/features/database/swoole/database-entities.md

docs/pages/docs/features/database/swoole/database-queries.md

docs/pages/docs/features/database/swoole/index.md

...docs/features/database/swoole/reusing-database-queries.md

docs/pages/docs/features/graphql/reusing-database-queries.md

resources/css/docs-formatted-content.css

src/DatabaseConnection.php

src/DatabaseConnectionPoolConfiguration.php

src/DatabaseConnectionPoolDriverName.php

src/DoctrineConnectionRepository.php

src/DoctrineDriverConnectTrait.php

src/DoctrineEntityManagerRepository.php

src/DoctrineMySQLDriver.php

src/DoctrinePostgreSQLDriver.php

src/DoctrineSQLiteDriver.php

...r/ConfigurationProvider/DatabaseConfigurationProvider.php